Abstract
| - A new dimeric sesquiterpenoid with eudesmane and aromadendrane skeletons linked through a urea fragment, halichonadin E (1), was isolated from a marine sponge Halichondria sp., and the gross structure and relative configuration of 1 were elucidated on the basis of spectroscopic data. Halichonadin E (1) is the first hetero-dimeric sesquiterpenoid with eudesmane and aromadendrane skeletons linked through a urea fragment.
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